Heat pump with optimized filter assembly
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Solution Overview
Problem
Existing heat pumps lack a filter arrangement that allows for easy replacement and integration of bypass volume flow, particularly in systems where fine filtering of the bypass volume flow has not been feasible.
Innovation Solution
A filter arrangement comprising a filter slide box with mutually insulated chambers for supply and exhaust air filters, allowing for simultaneous replacement and featuring a sealing concept to separate air flows, with a sandwich design of coarse and fine filters, and a sealing lip to guide air through different filters.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If filters are separated into coarse and fine filters at different positions in supply and exhaust air streams, then filtering effectiveness is improved, but device complexity and difficulty of replacement increase
Solution Approach 1:
The patent combines multiple filters (coarse and fine filters for both supply and exhaust air) into a single integrated filter box assembly. This allows all filters to be replaced simultaneously as one unit, reducing maintenance complexity while maintaining the filtering effectiveness of having separate coarse and fine filtration stages for different air streams.
Solution Approach 2:
The filter box is divided into separate chambers for supply air and exhaust air filters, with each chamber containing appropriate coarse and fine filters. This segmentation allows independent filtering of different air streams while maintaining a unified replaceable assembly structure.
2Reliability
If multiple filters are distributed at different positions, then filtering performance is improved, but ease of operation for filter replacement deteriorates
Solution Approach 1:
All filters are merged into a single filter box that can be removed and replaced as one complete unit. The filter box contains all necessary filters (coarse and fine for supply and exhaust air) arranged in separate chambers, allowing maintenance personnel to replace all filters in a single operation rather than accessing multiple distributed locations.
3Device complexity
If bypass volume flow is not integrated with filtration, then system simplicity is maintained, but airflow efficiency and filtering completeness deteriorate
Solution Approach 1:
The filter box is designed to handle multiple air streams (supply air and exhaust air) and multiple flow paths (filtered and bypass) within a single integrated structure. The bypass volume flow is incorporated into the filter box design, allowing the same filtration assembly to serve both filtered and bypass air paths, thereby improving airflow efficiency without significantly increasing system complexity.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables easy and effective replacement of all filters in a single operation, enhances airflow efficiency by separating and filtering supply and exhaust air streams, and maintains system performance by preventing airflow restriction.
Implementation Method 1
The filter slide box has a seal separating a supply air chamber and an exhaust air chamber
Implementation Method 2
the supply air filter and the exhaust air filter are contained in mutually insulated chambers
Data Source
Figure 1~2
Figure 3~4
AI summary
The invention relates to a heat pump with a supply air filter in a supply air ventilation duct (11) and an exhaust air filter in an exhaust air ventilation duct (12), wherein the supply air filter and the exhaust air filter are contained in mutually insulated chambers (14, 15) of a filter slide box (10) mounted in an externally accessible inlet/removal duct of the heat pump, which filter slide box crosses the supply air ventilation duct (11) with one of the chambers (14, 15) and the exhaust air ventilation duct (12) with the other of the chambers (14, 15), and which is arranged so as to be removable from the heat pump for replacing the supply air filter and the exhaust air filter.